"I've always been an open book. My way for me to deal with my own situation is that I take one step at a time. It's something very beautiful when you want to conceive and when you want to be parents again, when you want to be bless again. And for me to share this is about also bonding with other women that are going through the same thing," Dion said.

"It's priceless. So you know what? We had a miscarriage. We tried three more times. It did not work. ... We are trying again for the fifth try. It's aboard right now. All aboard," Dion said.

She is not ready to give up, in part because she has been through this before. Dion and her husband Rene Angelil tried for six years before turning to a fertility clinic for help conceiving their now 9-year-old son.

"I can't thank this guy, heaven enough, to have this beautiful child. And that we're just trying this one to give him a sister or brother. It would be extraordinary to try and make this love of the family grow more. But -- I have -- I have to try," Dion said.

Despite all the work she has put in to her numerous musical achievements, Dion said being a parent has been her most "challenging and rewarding job."

"I think we are very blessed to have the opportunity and a blessing to be a mother. I think when you are -- when you have a child, it's like there's another heart that grows inside of you. You have this like second heart," Dion said.

Seeing Celine Dion 'Through the Eyes of the World'

The Grammy-award winning artist has built her life and career around her son, something fans will notice when her film, "Celine -- Through the Eyes of the World," hits theaters this month.

The documentary follows Dion on a five-continent, 25-country tour. In addition to her son, Dion brought along her mother and her manager-husband as they saw "the beauty" of the world.

But the film isn't so much about what happens on stage in the public eye, but rather what happens in private. It shares such intimate moments of her life that a viewer might mistake parts of it for a home movie.

Among those moments was when Rene-Charles lost his beloved stuffed lamb, a crisis every mom can relate to. But when it was found a few days later, Celine said she was happier about it than her son.

The film also captured Dion with schoolgirls in South Africa, an experience she described as "touching."

"Knowing that the music travels without barriers? In South Africa, in Soweto, where they barely eat, barely dress. And they sing your songs? For me was like extremely -- if I may say, growing," Dion said.

The best-selling female artist of all time plans to return to the Colosseum at Caesars Palace in Las Vegas in March 2011 for a new show.